Thanks for the suggestions everyone.
I'm trying to stay away from the 'universal' ones because they're indy made and that worries me.
The one at Bavauto for like $200 (not a typo) actually doesn't fit the x5. I called them and the only option is the bolt-on strap that goes on the other end and does really help my situation.
The VW option looks good and hopefully some dealers in the area stock them.
I passed by my local GM dealer today because I read that the Chevy Tahoe is a pretty good fit. Check this out... the parts guy told my the extenders are free for GM owners...wtf??? What is free nowadays? But it's true. He was a cool guy..placed the order. I said I don't own a GM and he responded by saying I just have to state on the form that I have one (this form goes to HQ). They don't trace anything back to the vehicle. Apparently all the dealers do this as protocol. If it doesn't fit... so what it's free! Afterward I went to the pharmacy and found a gift card right by the entrance doors with $25 on it!! What else can go right. I'm going to play the lottery now.